Competitive bulk liquid membrane transport and solvent extraction of some transition and post-transition metal ions using acylthiourea ligands as ionophores

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dc.contributor.authorHabtu M.M.
dc.contributor.authorBourne S.A.
dc.contributor.authorKoch K.R.
dc.contributor.authorLuckay R.C.
dc.date.accessioned2011-05-15T16:05:15Z
dc.date.available2011-05-15T16:05:15Z
dc.date.issued2006
dc.description.abstractCompetitive transport experiments involving metal ions from an aqueous source phase through a chloroform membrane into an aqueous receiving phase have been carried out using a series of acylthiourea ligands as the ionophore present in the organic phase. The source phase contained equimolar concentrations of cobalt(ii), nickel(ii), copper(ii), zinc(ii), silver(i), cadmium(ii) and lead(ii) with the source and receiving phases being buffered at a number of different pHs. Transport selectivity was observed for silver(i) in all but one case. Selectivity for silver(i) was also observed in a series of parallel solvent extraction experiments carried out under similar source and membrane phase conditions. An X-ray diffraction study of the silver(i) complex of the N,N-dibutyl-N′-benzoylthiourea from this series is reported. There are two crystallographically independent molecules in the asymmetric unit and each molecule consists of four silver(i) ligand complex units, hence giving rise to Z = 8. In each molecule, both chelate and monodentate co-ordination modes of complexation to silver(i) are evident. Hence, each silver is co-ordinated to a sulfur and oxygen atom from one ligand and to a shared (bridging) sulfur from another ligand. Each silver atom is thus co-ordinated to three donor atoms. © the Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2006.
dc.description.versionArticle
dc.identifier.citationNew Journal of Chemistry
dc.identifier.citation30
dc.identifier.citation8
dc.identifier.issn11440546
dc.identifier.other10.1039/b603802f
dc.identifier.urihttp://hdl.handle.net/10019.1/13045
dc.subjectcadmium
dc.subjectchloroform
dc.subjectcobalt
dc.subjectcopper
dc.subjectionophore
dc.subjectlead
dc.subjectligand
dc.subjectnickel
dc.subjectsilver
dc.subjectthiourea derivative
dc.subjectzinc
dc.subjectaqueous solution
dc.subjectarticle
dc.subjectchemical reaction
dc.subjectconcentration (parameters)
dc.subjectcrystallography
dc.subjectliquid membrane
dc.subjectmembrane transport
dc.subjectpH measurement
dc.subjectphase transition
dc.subjectpriority journal
dc.subjectreaction analysis
dc.subjectsolvent extraction
dc.subjectX ray diffraction
dc.titleCompetitive bulk liquid membrane transport and solvent extraction of some transition and post-transition metal ions using acylthiourea ligands as ionophores
dc.typeArticle
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